Truck



w. c. HEDGcock TRUCK May 23, 1,933.

2 Sheets-Sheet l Filed July 21, 1931 www@ May 23,1933. w. c. HEDGCQCK TRUCK Filed July 21, 1931 2 Sheets-Sheet 2 '10 a recess in the si Patented May 23, 1933 UNITED STATES PATENT ori-frcs WILLIAI C. HIDGGOCI, F WIL-KETTE, ILLINOIS, ASSIGNOR TO AMERICAN STEEL IO'UNDBIIS, OF CHICAGO, ILLINOIS, A COBIORATION' 0F NEW JERSEY 'muck Application led July 8.1, 1981. Serial Fo. 552,154.

This invention pertains to a railway car truck.

A certain t pe of truck is provided with side frames o the pedestal type in which the B' journal boxes areguided between pedestal jaws, there bein springs carried on the to of each journal ox for supporting the truc side frame, said springs being posltioned between associated destal jaws and within dee frame. Such a method of positioning and enclosing a spring is undesxrably restrictive uponthe size, proportions, and capacities of the, springs so placed, so that in many cases it is impractical to obtain the desirable spring capacity and deilection in high capacity car trucks within the usual clearance conditions.

.An ob'ect of this invention, therefore, is

to provic a car truck construction wherein M increased sprin capacit is provided, in

combination wit the estal type of side frame. y

Another object of the invention is to provide a construction wherein there is direct Il connection between the side frames and bolster, but wherein the engaging surfaces are arranged for true rocking action to permit a more constant load application.

With these and various other objects in l0 view, the invention may consist of certain novel vfeatures of construction and operation as will be more full described and particularly pointed out 1n the specilication, drawings and claims appended hereto.

In the drawings, which illustrate an embodiment of the device and wherein like reference characters are used to designate like parts- Y Figure 1` is a side elevation partly in section of a truck embodying the invention;

Figure- 2 is an end elevation artly in sec: tionlof the truck construction s own in Figure y Figure 3 is a one-half top plan of the truck constructionshown in Figure 1.

In "the of truck construction illustratedlthe side frames 10 are preferably of truss construction, having spaced tension and lcompression members 12 and 14v conl0 verging and being integrally formed adjavided 'for springs of relatlvely greater height cent each end 16, there being provided a central bolster opening 18 vdefined by the spaced columns 20 connecting the tension and compression members, the opening formed being provided with Va bolster seat 22, said seat being integrally formed on the upper face of the tenslon member lbetween said columns. The end portions 16 are pro- .vided with spacedv pedestals 24 and 26 for guiding an associated journal box 28 therebetween.l Each journal box 28 is adapted to cooperate with the journal end 30 of the wheel and axle assembly 32 which may be of any construction, such as the standard A. R.IA. or the Simplex type, the journal box conforming to any desired construction'.

Each journal box is provided with spring sea-ts 34-36 extending laterally from each side thereof upon which are mounted the sprin nests 3 8, said springs carrying the side rame 10 upon seats 40 and 42 disposed on said side frame, the s rings' being partly embraced by 'the pedesta jaw structure, including the face 44 and the flanges 46. The springs may be of any desired construction, such as describedin application Serial No. 552,153, filed Ju1y 21, 1931. It will thus be seen that by placing the springs on seats on each side of the journal box, space is provided for two springs of substantially the same diameter and capacity as can be obtained in a single spring over the top of the box. Furthermore, adequate space is proand deilection.

The bolster 48 has the usual center plate 50 and side bearing seats 52 and is directly and flexibl, seated as at 54 on each side frame seat 22, t ey bolster being provided with spaced depending anges 56 and 58 embracing theseat 22 to `position the bolster on the side frame. The seat 54 of the bolster is formed with an arcuate surface as at 60 extending longitudinally of the side frame so that the bolster may rock easily on the side frame seat 22 to permit the side frameto readily oscillate to conform to track irregularities and without causing an eccentric loading on one side of the engaging surface. Although the arcuatesurface 60 is shown as 100 als provided on the bolster, it will of course be understood that the curve ma be reversed ,and placed on the seat 22. rake hanger brackets 62 and 64 may be provided on each side ofthe wheels for suitable brake rigging.

With a truck of the construction shown eccentric loading of the parts is prevented and eas riding qualities are rovided, and it is 'to understood that I o not wish to be limited by the exactembodiment of the device shown, which is merely by' way of illustration and not limitation, as various and other forms of the device will of course be apparent to those skilled in the art without departing from the spirit of the invention or the scope of the claims. v

I clalm:

1. In a car truck, the combination of tension and compression members and integral connecting1 column guides forming a bolster opening erewith, the portion o said tension member between said column guides being a bolster seat Aa bolster rockably supported on said seat, said tension member havmg an upper and lower chord and margin with said compression member, the' mer e portion having spaced pedestals for slida ly receiving a journal box, said journal box having spring seats below the cellar thereof, the merged portion having spring seats ali ed with said first namedl spring seats an adjacent the u per chord of said tension member, and res' ient means between said aligned seats.

2. In a car truck, the combination of tension and com ression members and integral connectin co umn guides formin a bolster opening erewith, the portion o said tension member between said column idea being a bolster seat, a bolster non-resiliently supported on said seat, said tension member having an upper and lower chord and mer and lower chord and mergl ing` with said compression member e merged portions having spaced pedestals for slidably receiving a journal box, saidjournal box having spring seats below the cellar .thereof the-merged portion havin spring seats a with said first name seats an adjacent the upper chord o sai tension member, and resilient means between said aligned seats.

3. In a car truck, the combination of tension and compreion members and integral connecting column guides forming a Abolster opening therewith, the portion of said tenslon member between sald column guid being abolster seat, a'bolster supported on said seat, said tension member ha upper :iii said compression member, the-mer portion having spaced pedestals for slidab y receiving a journal box said 'ournal box having Aspring seats below the anthereof, the mered portion springseats edwi saidirst have nam spring seats an adjacent the upper chord of said tension member, and resilient Y sion and com ressionJnembers and intelteal connecting co umn guides forming a bo opening therewith, t e portion of said tension member between said column ides being a bolster seat, a bolster supporte on said seat, said tension member having an upper and lower chord and mergin' with said compression member, the merg portion being provided with a spring seat formed substantially as a. continuation of said u per chord, the lower chord being interrupted) 1n Way of said seat for-permittin access of a spring thereto. v

6. In a car truc the combination of tension and com ression members and inte l connectn column guides formin a bo r opening t erewith, the portion-o said tenslon member between said column guides be- .ing a bolster seat, a. bolster rockably supported on said seat, said tension member having an u per and' lower chord and margin with sai compression member, the mers rtion being provided with a spri seat grmed substantially as a continuation of said upper chord.

7. In a car truck, the combination of tension and com ression members and in connecting co umn guides form a opening therewith, the rtion of said tension member between said column guides being a bolster seat, a bolster rockably supported on said seat, said tension member h avmg an u per and lower chordand mer I with sai compression member, the `me ortion being provided with a spring seat ormed substantially as a continuation of said upper chord, the lower chord being interrupted in way of said seat for permitting access of a sprm thereto.

Signed at Chicago, Illinois, this 19th day of June, 1931.

AWILLIAM o. macosxerewith, the portion o said tenv 

